[eqvinox]

> Like trafficked, panicked, frolicking, etc.

Those aren't truncations of longer words though?

I'd write it as spec'ed but that's German grammar with ' as a truncation mark (signifying the omitted "ifi").

[ninalanyon]

It's also normal English usage.

[butvacuum]

I don't think its good for formal use, but it is common.